If your fork takes off, I (and others) would love to help contribute. Things like ChromeOS/Android table support (which many forks have added in the past) and being able to use an Android phone/tablet as a link device would be great.
These are intriguing ideas, but I can't guarantee that will happen. I'm a firmware engineer by trade, but I know enough Android stuff to do basic things.
there is already Singal fork with no APK expire whrere you can keep using SMS as long as you want